Lubricator with ball-closure.



A. PRIBIL. 'LUBRIUATOR WITH BALL CLOSURE.

. APPLIUATION FILED DEC. 9, 1.908. L 992 5 1 9 Patented May 16,1911.

O 05 Z A WITNESSES;

,ADOLPHE PRIBIL, or mansninnn, FRANCE.

LUBRIGATOR WITH BA L-CLOS RE:

Be it known that I, Anonrrrn 'PRIBI-L, a citizen of the French Republic, residing at 55 Rue'Paradis, Marseille, France, have invented certain new and useful Improvements in Lubricators with Ball-Closures, of.

which the following is a specification.

The present inventioi relates to lubricab ing devices, and especially to lubricators having hall closures. In this class of luhricators an oil duct isprovided upon which restsa ball designed to permit the passage of oil through the-duct when the ball is shaken in use.- In devices of this kind as heretofore made the to'p'of the duct has been so constructed that a ball rested either in a seat so that. there was considerable surface contact between the parts; orthe formation has been so close to this construction that the oil causes an adhesion bet-ween the ball and its socket or seat. Even though the ball actually rests upon the top of the duct so that there is only a'circle of contact, there is apt to be considerable adhesion where the upper wall of the duct or socket-forms with a tangent struck fromthe ball at the, circle of contact an angle which is very acute.

According to the present invention the tpp of theduct is so constructed that the angle justreferred to-isfvery large. In

. 1 other words, the top of the-seat is conically raised so that it forms an angle with the ball which is so large as to avoid the adhesive action of the oil. According to another feature of the invention, means are provided for so limiting the ball in its play that its center of gravity remains always above the duct. 1 Ihave also discovered thatvery much improved results can be obtained if the diameters of the ball and duct are in a certain definite proportion. ball must be lifted from its lowest position in order to permit the oil to enter the duct. The greater the lift the greater the lubri'cat--' ing effect with a given diameter of ball. Naturally the'degree of lifting difiers with the relative diameters of the duct and ball.

In the accompanying drawings .whereinl. have illustrated one form of the inventlon, Figure 1 is a vertical-section showing the invention as applied 'to an ordinary oil 'res erfvoir and Fig. 2 is an elevation partly'in 7 section of the preferred form..

Referring to the drawings, the. ball which is preferably of hardened steel rests on a seat member I). The top of the latter Specification of Letters IEfatent.

The

Patented iu a iio, 1911. 9, 190's. Serial No. 465,630.

is raised at an oblir ue angle toward the center. It has a passage a forming the oil duct. It will be seen that by this constructhe narrowedge of the seat. In other words a tangent 7' struck from the-ball forms a large angle with the sides 8 of the seat member, so that adhesion due to the oil between the ball and the socket is avoided. Bythis means the lubricating device becomes much more sensitive, and works more easily.

The force required to 'raise the ball is 0bthe ball rests. Hence other things being equal, the smaller the duct the more sensitive lubrication would be obtained.

diameter of the duct is made too small there through the duct. To counteract this a the best results. Extended experiments diameter yield the best results. The ball may preferably have a diameter of 19 mm. In order to afford a certainty of closing d for so limiting the movement of the balls balli-falling outside of the area of the duct. The hood may b'eformed with a series of ball is continuously raised'and lowered, due to the shaking action ofthe vehicle or bearperforms anunexpected result in the nature weight it presses the oil into the duct so it is found that the oil is higher therein the, engine is stationary. This pressure in-' sure of the'oil to force its way between the parts.

tion the surface of the ball is separatedif widely from the seat member, except alongviously less the smaller the duct upon which as to prevent the center of gravity of the of aj pumping. action. 'On account of its- A limit is soon reached however, since if the' I s considerable danger of the ball leaving its seat too easily, so that too much oil is fed heavier ball must be used in order-to obtain have shown that a. ball of 17. to 2l mm; diameter and an oil duct of 1.7 to 4.8 mm. in

from all positions to which the ball may be moved, means are provided suchv as-the hood perforations as shown in Fig. 1, or may have a central perfora-tion, as shown in Fig.

2. In consequence of this arrangement'the ing.- I have found in practice that italsothat if at the lower end of the oil duct there is arranged a small manometric glass tube,

while the engine is working and lower when --duced by the'ball is of importance since in many instances parts which are to be lllbl'i'.

cated rest against one another with such' pressure as torequirea corresponding pres- Since the pumping action-of the ball. is not dependent upon the height of; the oil 

